A/CC's Consolidated Risk Tables

Earth Impact Risk Ratings Posted in the Last 31 Days

Compiled at 1423 UTC on 5 January 2009

[ The Tracking News | ephemerides | cleared ]

Missing something? Here are 99942 Apophis (2004 MN4) and 144898 2004 VD17. Check the archives for others.

Note that the time horizon for JPL is 100 years from today and for NEODyS is usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000 Object	Risk Monitor	A/CC Noted Time & Day UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Latest Risk Assessments

2009 AV	NEODyS	1433 Jan. 4	2010-2085	75	3.16e-08	-2.68	-2.81	0	Based on 10 optical observations (of which 0 are rejected as outliers) from 2009/01/02.541 to 2009/01/03.539.
	JPL Sentry	1859 Jan. 3	2010-2106	209	1.1e-07	-2.45	-2.59	0	Analysis based on 10 observations spanning .99743 days (2009-Jan-02.54066 to 2009-Jan-03.53809). Diameter approximately 0.905 km. from mean, weighted H=17.9.
	Assessment postings were noted by A/CC on 3 Jan. & 4 Jan. - References: MPEC 2009-A27

2009 AL	NEODyS	1556 Jan. 3	2053-2057	2	1.63e-07	-5.05	-5.05	0	Based on 25 optical observations (of which 0 are rejected as outliers) from 2009/01/01.300 to 2009/01/03.171.
	JPL Sentry	1556 Jan. 3	2049-2106	8	4.8e-07	-4.81	-5.08	0	Analysis based on 25 observations spanning 1.8705 days (2009-Jan-01.29931 to 2009-Jan-03.16982). Diameter approximately 0.160 km. from mean, weighted H=21.6.
	Assessment postings were noted by A/CC on 2 Jan. & 3 Jan. - References: MPECs 2009-A14 & 2009-A22

2008 YV32	NEODyS	1433 Jan. 4	2072-2090	6	2.12e-06	-6.58	-7.03	0	Based on 33 optical observations (of which 0 are rejected as outliers) from 2008/12/31.221 to 2009/01/03.149.
	JPL Sentry	1433 Jan. 4	2085-2107	14	7.5e-06	-6.09	-6.69	0	Analysis based on 33 observations spanning 2.9281 days (2008-Dec-31.22029 to 2009-Jan-03.14842). Diameter approximately 0.019 km. from mean, weighted H=26.3.
	Assessment postings were noted by A/CC on 2 Jan., 3 Jan. & 4 Jan. - References: MPECs 2009-A08, 2009-A22 & 2009-A30

2008 YU32	NEODyS	1556 Jan. 3	2013-2088	48	2.56e-07	-3.37	-3.79	0	Based on 19 optical observations (of which 0 are rejected as outliers) from 2008/12/31.103 to 2009/01/03.154.
	JPL Sentry	1556 Jan. 3	2013-2103	57	4.2e-07	-3.26	-3.70	0	Analysis based on 19 observations spanning 3.0513 days (2008-Dec-31.10188 to 2009-Jan-03.15316). Diameter approximately 0.373 km. from mean, weighted H=19.8.
	Assessment postings were noted by A/CC on 2 Jan. & 3 Jan. - References: MPECs 2009-A07 & 2009-A22

2008 YF29	NEODyS	1433 Jan. 4	2090	1	1.77e-07	-6.65	-6.65	0	Based on 42 optical observations (of which 0 are rejected as outliers) from 2008/12/30.250 to 2009/01/03.793.
	JPL Sentry	1433 Jan. 4	R E M O V E D						Risk listing removed at 0950 UTC 4 Jan.
	Assessment postings were noted by A/CC on 30 Dec., 31 Dec., 2 Jan., 3 Jan. & 4 Jan. - References: MPECs 2008-Y76, 2008-Y80, 2009-A06, 2009-A22 & 2009-A30

2008 YD3	NEODyS	1459 Dec. 23	2022	1	4.9e-10	-9.27	-9.27	0	Based on 12 optical observations (of which 0 are rejected as outliers) from 2008/12/22.343 to 2008/12/22.486.
	JPL Sentry	2258 Dec. 22	2012-2104	21	4.3e-08	-7.82	-8.25	0	Analysis based on 12 observations spanning .14315 days (2008-Dec-22.34245 to 2008-Dec-22.4856). Diameter approximately 0.020 km. from mean, weighted H=26.2.
	Assessment postings were noted by A/CC on 22 Dec. & 23 Dec. - References: MPEC 2008-Y40

2008 YC3	NEODyS	1556 Jan. 3	2084-2090	11	6.31e-05	-4.79	-5.22	0	Based on 33 optical observations (of which 4 are rejected as outliers) from 2008/12/22.254 to 2009/01/03.133.
	JPL Sentry	1556 Jan. 3	2088-2107	19	2.0e-04	-4.32	-4.87	0	Analysis based on 29 observations spanning 11.879 days (2008-Dec-22.25277 to 2009-Jan-03.13185). Diameter approximately 0.027 km. from mean, weighted H=25.5.
	Assessment postings were noted by A/CC on 22 Dec., 23 Dec., 27 Dec., 29 Dec., 30 Dec., 31 Dec. & 3 Jan. - References: MPECs 2008-Y39, 2008-Y56, 2008-Y61, 2008-Y66, 2008-Y80 & 2009-A22

2008 YO2	JPL Sentry	2032 Jan. 1	2052-2107	39	6.8e-06	-5.31	-5.88	0	Analysis based on 26 observations spanning 1.0020 days (2008-Dec-21.16512 to 2008-Dec-22.16708). Diameter approximately 0.031 km. from mean, weighted H=25.2.
	NEODyS	1605 Jan. 1	2052-2089	7	2.1e-06	-5.78	-5.91	0	Based on 26 optical observations (of which 0 are rejected as outliers) from 2008/12/21.166 to 2008/12/22.168.
	Assessment postings were noted by A/CC on 22 Dec., 23 Dec. & 1 Jan. - References: MPECs 2008-Y34 & 2009-A02

2008 XU2	NEODyS	1433 Jan. 4	2039	1	3.01e-07	-6.64	-6.64	0	Based on 44 optical observations (of which 0 are rejected as outliers) from 2008/12/06.262 to 2009/01/03.259.
	JPL Sentry	1433 Jan. 4	2039	1	2.9e-07	-6.65	-6.65	0	Analysis based on 44 observations spanning 27.997 days (2008-Dec-06.2616 to 2009-Jan-03.258608). Diameter approximately 0.026 km. from mean, weighted H=25.6.
	Assessment postings were noted by A/CC on 7 Dec., 8 Dec., 10 Dec., 24 Dec., 30 Dec., 31 Dec., 1 Jan. & 4 Jan. - References: MPECs 2008-X55, 2008-X71, 2008-Y50, 2008-Y66, 2008-Y80, 2009-A02 & 2009-A30

2008 XC1	NEODyS	2305 Dec. 13	2085	1	1.22e-07	-6.46	-6.46	0	Based on 139 optical observations (of which 1 are rejected as outliers) from 2008/12/03.369 to 2008/12/11.334.
	JPL Sentry	1456 Dec. 13	2085-2088	2	1.3e-07	-6.44	-6.50	0	Analysis based on 138 observations spanning 7.9652 days (2008-Dec-03.36799 to 2008-Dec-11.3332). Diameter approximately 0.063 km. from mean, weighted H=23.7.
	Assessment postings were noted by A/CC on 5 Dec., 6 Dec., 7 Dec., 8 Dec., 9 Dec., 10 Dec., 11 Dec., 12 Dec. & 13 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X64, 2008-X70, 2008-X71, 2008-X72, 2008-X79 & 2008-X82

144898 2004 VD17	NEODyS	1532 Jan. 4	2102-2104	2	5.64e-08	-4.91	-4.91	0	Based on 974 optical observations (of which 4 are rejected as outliers) from 2002/02/16.463 to 2009/01/03.407.
	An assessment posting was noted by A/CC on 4 Jan. - References: MPEC 2009-A30

C L E A R E D
2008 YY32	JPL Sentry	1433 Jan. 4	R E M O V E D						Risk listing removed at 1030 UTC 4 Jan.
	Assessment postings were noted by A/CC on 2 Jan., 3 Jan. & 4 Jan. - References: MPECs 2009-A11, 2009-A22 & 2009-A30

2008 YU30	NEODyS	1556 Jan. 3	R E M O V E D
	JPL Sentry	1556 Jan. 3	R E M O V E D						Risk listing removed at 1138 UTC 3 Jan.
	Assessment postings were noted by A/CC on 1 Jan., 2 Jan. & 3 Jan. - References: MPECs 2008-Y86, 2009-A06, 2009-A22 & 2009-A30

2008 YT30	JPL Sentry	1357 Jan. 5	R E M O V E D						Risk listing removed at 0953 UTC 5 Jan.
	NEODyS	1556 Jan. 3	R E M O V E D
	Assessment postings were noted by A/CC on 1 Jan., 2 Jan., 3 Jan. & 5 Jan. - References: MPECs 2008-Y85, 2009-A06, 2009-A22 & 2009-A31

2008 YH30	JPL Sentry	2217 Jan. 2	R E M O V E D						Risk listing removed at 2205 UTC 2 Jan.
	Assessment postings were noted by A/CC on 31 Dec. & 2 Jan. - References: MPECs 2008-Y84, 2009-A06 & 2009-A22

2008 YF30	JPL Sentry	2217 Jan. 2	R E M O V E D						Risk listing removed at 2135 UTC 2 Jan.
	NEODyS	1414 Jan. 2	R E M O V E D
	Assessment postings were noted by A/CC on 31 Dec., 1 Jan. & 2 Jan. - References: MPECs 2008-Y82, 2009-A06 & 2009-A22

2008 YE29	NEODyS	1556 Jan. 3	R E M O V E D
	JPL Sentry	1556 Jan. 3	R E M O V E D						Risk listing removed at 1129 UTC 3 Jan.
	Assessment postings were noted by A/CC on 30 Dec., 31 Dec., 2 Jan. & 3 Jan. - References: MPECs 2008-Y75, 2008-Y80, 2009-A06, 2009-A22 & 2009-A30

2008 YB29	JPL Sentry	1959 Jan. 1	R E M O V E D						Risk listing removed at 1949 UTC 1 Jan.
	Assessment postings were noted by A/CC on 30 Dec. & 1 Jan. - References: MPECs 2008-Y72, 2009-A02, 2009-A06 & 2009-A22

2008 YA29	JPL Sentry	1959 Jan. 1	R E M O V E D						Risk listing removed at 1949 UTC 1 Jan.
	NEODyS	1604 Jan. 1	R E M O V E D
	Assessment postings were noted by A/CC on 30 Dec., 31 Dec. & 1 Jan. - References: MPECs 2008-Y71, 2009-A02, 2009-A06 & 2009-A22

2008 YJ3	NEODyS	1536 Dec. 27	R E M O V E D
	JPL Sentry	1536 Dec. 27	R E M O V E D						Risk listing removed at 0951 UTC 27 Dec.
	Assessment postings were noted by A/CC on 23 Dec., 24 Dec. & 27 Dec. - References: MPECs 2008-Y48, 2008-Y56, 2008-Y66, 2008-Y80, 2009-A06 & 2009-A22

2008 YN2	JPL Sentry	1536 Dec. 27	R E M O V E D						Risk listing removed at 0955 UTC 27 Dec.
	Assessment postings were noted by A/CC on 22 Dec. & 27 Dec. - References: MPECs 2008-Y33, 2008-Y56, 2008-Y66, 2008-Y80, 2009-A06 & 2009-A30

2008 XQ2	NEODyS	1430 Dec. 17	R E M O V E D
	JPL Sentry	1430 Dec. 17	R E M O V E D						Risk listing removed at 0950 UTC 17 Dec.
	Assessment postings were noted by A/CC on 7 Dec. & 17 Dec. - References: MPECs 2008-X52, 2008-X54, 2008-Y02, 2008-Y66 & 2009-A06

2008 XP2	JPL Sentry	1552 Dec. 7	R E M O V E D						Risk listing removed at 1039 UTC 7 Dec.
	Assessment postings were noted by A/CC on 6 Dec. & 7 Dec. - References: MPECs 2008-X51, 2008-X54, 2008-X64, 2008-X82, 2008-Y02, 2008-Y50, 2008-Y56 & 2008-Y61

2008 XO2	JPL Sentry	1415 Dec. 24	R E M O V E D						Risk listing removed at 0949 UTC 24 Dec.
	NEODyS	1415 Dec. 24	R E M O V E D
	Assessment postings were noted by A/CC on 6 Dec., 7 Dec., 8 Dec. & 24 Dec. - References: MPECs 2008-X50, 2008-X54, 2008-X64, 2008-Y50, 2008-Y66 & 2009-A22

2008 XB2	JPL Sentry	1557 Dec. 6	R E M O V E D						Risk listing removed at 0956 UTC 6 Dec.
	Assessment postings were noted by A/CC on 5 Dec. & 6 Dec. - References: MPECs 2008-X44, 2008-X49, 2008-X54, 2008-X70, 2008-X71, 2008-X82, 2008-X87 & 2008-Y02

2008 XM1	NEODyS	1552 Dec. 7	R E M O V E D
	JPL Sentry	1552 Dec. 7	R E M O V E D						Risk listing removed at 1033 UTC 7 Dec.
	Assessment postings were noted by A/CC on 5 Dec., 6 Dec. & 7 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X64, 2008-X70, 2008-X71, 2008-X79, 2008-X82 & 2008-X87

2008 XO	NEODyS	1357 Dec. 5	R E M O V E D
	JPL Sentry	1357 Dec. 5	R E M O V E D						Risk listing removed at 1130 UTC 5 Dec.
	Assessment postings were noted by A/CC on 5 Dec. - References: MPECs 2008-X40, 2008-X54 & 2008-X82

2008 XN	NEODyS	1557 Dec. 6	R E M O V E D
	JPL Sentry	1557 Dec. 6	R E M O V E D						Risk listing removed at 1030 UTC 6 Dec.
	Assessment postings were noted by A/CC on 5 Dec. & 6 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X70, 2008-Y08, 2008-Y50, 2008-Y56, 2008-Y66 & 2009-A06

2008 WK96	JPL Sentry	1415 Dec. 24	R E M O V E D						Risk listing removed at 0953 UTC 24 Dec.
	NEODyS	1415 Dec. 24	R E M O V E D
	Assessment postings were noted by A/CC on 5 Dec., 6 Dec., 7 Dec., 8 Dec., 13 Dec., 17 Dec. & 24 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-X64, 2008-X82, 2008-Y02, 2008-Y50 & 2008-Y80

2008 WY94	JPL Sentry	1529 Dec. 30	R E M O V E D						Risk listing removed at 0951 UTC 30 Dec.
	NEODyS	1529 Dec. 30	R E M O V E D
	Assessment postings were noted by A/CC on 7 Dec., 9 Dec., 11 Dec. & 30 Dec. - References: MPECs 2008-X54, 2008-X70, 2008-X72 & 2008-Y66

2008 WZ13	NEODyS	1801 Dec. 7	R E M O V E D
	JPL Sentry	1552 Dec. 7	R E M O V E D						Risk listing removed at 0951 UTC 7 Dec.
	Assessment postings were noted by A/CC on 5 Dec., 6 Dec. & 7 Dec. - References: MPECs 2008-X40, 2008-X49, 2008-X54, 2008-Y50 & 2008-Y66

2008 UW99	JPL Sentry	1348 Dec. 8	R E M O V E D						Risk listing removed at 0950 UTC 8 Dec.
	An assessment posting was noted by A/CC on 8 Dec. - References: MPEC 2008-X64

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

For a list of risk-rated objects currently under observation, see our ephemerides page.

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" for more information.

http://www.HohmannTransfer.com/crt.htm
Publisher information, privacy statement, and disclaimer.
Please report broken links or other problems with this page to <webmaster@hohmanntransfer.com>.
The data and tabular formats on this page are acknowledged as belonging to JPL and NEODyS.
This page is © Copyright 2003-2009 Columbine, Inc. - All Rights Reserved
Do NOT copy or mirror this page, but please do link to it. All information here is subject to very frequent (and sometimes critically important) change.
Individuals may make "snapshot" copies for their own private non-commercial use.
CRT updates are flagged by A/CC's RSS news feed (link)